---
Title: "RapidJSON - A fast JSON parser/generator for C++"
Date: 2017-11-01 16:55:24
Categories: [programming]
tags: [rapidjson, json, c++]
Authors: sedlav
---

**RapidJSON** is a JSON parser and generator for C++. It was inspired by RapidXml.

* RapidJSON is small but complete. It supports both SAX and DOM style API. The SAX parser is only a half thousand lines of code.
* RapidJSON is fast. Its performance can be comparable to strlen(). It also optionally supports SSE2/SSE4.2 for acceleration.
* RapidJSON is self-contained and header-only. It does not depend on external libraries such as BOOST. It even does not depend on STL.
* RapidJSON is memory-friendly. Each JSON value occupies exactly 16 bytes for most 32/64-bit machines (excluding text string). By default it uses a fast memory allocator, and the parser allocates memory compactly during parsing.
* RapidJSON is Unicode-friendly. It supports UTF-8, UTF-16, UTF-32 (LE & BE), and their detection, validation and transcoding internally. For example, you can read a UTF-8 file and let RapidJSON transcode the JSON strings into UTF-16 in the DOM. It also supports surrogates and "\u0000" (null character).

[Link](http://rapidjson.org/index.html)
